Fly-exit for window or door screens



.I. 0. FJARLI. FLY EXIT FOR WINDOW 0R DOOR SCREENS. APPLICATION FILED APR. 7. 1919.

1,334, 148. Patented Mar. 16, 1920.

- enrrnn STATES PATENT ornion.

JOHN 0. FJABIJ, OF BERWIGK, NORTH DAKOTA.

FLY-EXIT ron wmnow 03. noon SGREENS..

Z '0 (ZZZ whom it may concern: Be it known that 1, JOHN O. FJARL1,a citi- Zen of the United States, residing at 13er Y interior of a room while at the same time effectually preventingthe return of the insect through the screening material.

The invention further. aims to provide a window or door screen having exit openings formed therein and provided at said openings with a supplemental screen or at an angle or inclination with respect to the screening material. of the main frame.

A still further object of the invention is generally to improve this class of devices so as to increase their utility, durability and efficiency.

Figure 1 is a perspective view of a window screen provided with a fiy exit embodying the present invention;

Fig. 2 is a longitudinal sectional view taken on the line 2-2 of Fig. 1 and looking in the direction of the arrows;

Fig. 3. is a front elevation of the upper portion of the screen showing the constru tion of the fly exits;

Fig. 4 is a detail perspective view showing the mannner of attaching the supplemental screen or guard to the main supporting frame.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

The improved device forming the subjectmatter of the present invention may be applied to door or window screens of any desired construction and by way of illustration is shown in connection with a window screen Specification of Letters Patent. Patented lllal. 16, 1920.

Application filed April 7, 1919. Serial No. 288,0G2. I i

in which 5 designates the supporting frame including longitudinalside bars, 6 connected by end bars 7 and an intermediate bar 8. Bearing against the outerface of the supporting frame 5 is a continuous strip of wire-screening material 9, said screening material being secured to the side, end and intermediate bars of the frame by suitable retaining strips, indicated at 10. .The screening material. immediately below the upperbar 7 and intermediate bar 8 is provided with spaced exit openings 11 and the material around said openings is preferably reinforced and strengthened by the provision of suitable eyelets 12 although, if desired, the eyelets 12 may be dispensed with and the openings in the screen formed bypunching or spreading the strands of wire to produce said openings.

Arranged at the rear of each set-o'f exit openings 11 is a supplemental screen or guard 13, each guard being preferably formed of a single sheet of wire netting, the upper longitudinal edge of which is secured to the adjacent portion of the frame by the retaining strips 10, while the lower longitudinal edge thereof is extended beyond its ends to form anchoring ears 1% which are slightly twisted so as to overlie the inner face of the frame 5 and are rigidly secured thereto. For this purpose attaching clips 15 are employed each preferably stamped or otherwise formed from a single strip of metal, the edges of which are bent to produce teeth or spurs 16 adapted to be embedded into the adjacent side bars 6. If desired, a screw or similar fastening device 17 may be passed through each attaching clip 15 and into the frame to assist in securing the cars 14 in position thereon. It will be understood, however, that if desired the clips 15 may be omitted and the ears or extensions 14 on the guard 13 attached directly to the supporting frame. The supplemental screens or guards 13 are disposed at an angle or inclination with respect to the screening material 9 so as to effectually guide flies, mosquitos and other insects through the exit openings 11. It will thus be seen i that flies or other insects alighting on the screening material 9 at the interior of the room will crawl upwardly on said screening material and be directed through the exit openings by the guards 18 and inasmuch as the openings 11 are relatively small, liability of-the insects returning to the interior of the room through said openings is reduced to a minimum.

The device is extremely simple inconstruction and may be readily attached to window- 1 frame and inclined in the directionof the exit openings with the opposite edgesofthe guard bearing against the inner edgesof the frame, said guard being provided with laterally extending ears for attachment to the rear face of'the' frame, the entire body of the guard with the exception of the ears being disposed within the lines of the frame.

2. A device of the class'described including a frame, screening material secured to the frame and provided with exit openings, and a guard leading across the frame at said exit openings and secured along'its upper edge thereto, the body -'of .the guard standing oblique to the general plane of the frame and its lower edge extended at its ends into ears't-wistedlieflat upon the inner face of the side bars of the frame, clips fitting over the ears, and fastening devices passing through the clips and ears and into the frame, said guard with the exception of the ears being disposed entirely within the lines of the frame.

3. he device of the class described, a frame including side bars connected by end and intermediate cross bars, screening material secured to the frame and extending over all ofsaid bars, there being exit openings formed in the screening material immediately below the upper cross bar and intermediate bar, guards; independent of the screening material arranged at the rear of the exit openings and inclined in the direction thereof, the upper longitudinal edges of the guards being secured to the adjacent cross bars with the side edges thereof bearing against the adjacent inner edges of the side bars of the frame and with the lower edges thereof extended laterally to form ears for contact with the inner faces of the side bars of said frame, said guards with the exception of the ears being disposed entirely within the lines of the frame;

In testimony whereof I afiix my signature.

] 'JOH'N' o. ,FJARLI. [L.s.] 

